The Remington Arms Model 51 .380 ACP Pedersen is a usa-made semi-automatic pistol chambered in .380 ACP, introduced in 1918. Primary use: self_defense, sport. Type: Pistol Action: Semi-Automatic Caliber: .380 ACP Capacity: 7 Year introduced: 1918, USA Weight: 116.8 oz Overall length: 43.6" Status: Discontinued Intended use: self_defense, sport